Insights into structure and properties of cellulose nanofibrils (CNFs) prepared by screw extrusion and deep eutectic solvent permeation

Yan, Ming; Tian, Chaochao; Wu, Ting; Huang, Xingyu; Zhong, Yidan; Yang, Pei; Zhang, Lili; Ma, Jinxia; Lu, Hailong; Zhou, Xianwei

doi:10.1016/j.ijbiomac.2021.09.105

Cited by 33 publications

(5 citation statements)

References 56 publications

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“…DESs with high viscosity will be subjected to greater resistance in penetrating cellulose, so the penetration rate is slow. On the contrary, DESs with low viscosity penetrates faster (Yan et al 2021). The viscosity of different DESs was presented in Table 1.…”

Section: Viscosity Measurement Of Different Dessmentioning

confidence: 98%

Insights into the critical role of anions in nanofibrillation of cellulose in deep eutectic solvents

Zhang,

Dai,

Zhang

et al. 2023

Preprint

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Complex interactions between cellulose molecules and small molecules can lead to dramatic changes in the structure of the hydrogen bond network in cellulose in green sustainable deep eutectic solvents (DESs). However, the molecular and ionic evolution mechanism of DESs on cellulose nanofibrillation is still unclear. In this study, the mechanism and the critical role of action of ions in DESs on cellulose nanofibrillation were investigated. The results showed that cellulose nanofiber (CNF) with a diameter of less than 200 nm can be prepared directly by DES containing lactic acid (LA) and chloride (LA/ammonium chloride (NH4Cl) and LA/dodecyltrimethylammonium chloride (DTAC) with a diameter of less than 200 nm, and LA/zinc chloride (ZnCl2) with a diameter of less than 100 nm). The Kamlet-Abboud-Taft parameters (KAT value) showed that DESs containing LA have higher hydrogen bond acidity (α) than other systems (such as ethylene glycol and urea) without LA, which can provide more active protons to improve the proton mobility in the cellulose nanofibrillation. And DESs composed of LA and Cl− have high hydrogen bond alkalinity (β), which can lead to great changes in the original hydrogen bond network of cellulose and form a new hydrogen bond structure, thus making the deconstruction of cellulose easy. Thus, LA can be esterified with hydroxyl groups of cellulose under high-temperature moistening conditions, and the CNF prepared by DES system containing LA and Cl− had a highest degree of substitution (DS) (up to 0.73 in LA/ZnCl2 system) after high-temperature moistening.

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Section: Viscosity Measurement Of Different Dessmentioning

confidence: 98%

Insights into the critical role of anions in nanofibrillation of cellulose in deep eutectic solvents

Zhang,

Dai,

Zhang

et al. 2023

Preprint

Self Cite

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“…Apart from the fractionation of lignocellulose biomass, DESs can reduce the size of these natural polymeric materials towards the nanoscale, including cellulose nanocrystals (CNCs), 48,51,52,54,85 cellulose nanofibers (CNFs), 57,58,63 lignin nanoparticles (LNPs), 66,69,70 and lignin-containing CNCs/ CNFs 61,62,64,86 (Fig. 4c).…”

Section: Lignocellulosementioning

confidence: 99%

Deep eutectic solvents towards green polymeric materials

Weerasinghe,

Wu,

Chee

et al. 2024

Green Chem.

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“…A low-eutectic solvent (DES) system of ChCl-EG was used as the solubilizing solvent. DES was used as the reaction medium and mixed with the insoluble dietary fiber of okara at 120 °C for 2 h. The yield of raw cellulose was 84–87% [ 53 ].…”

Section: Cellulosementioning

confidence: 99%

Isolation and Extraction of Monomers from Insoluble Dietary Fiber

Wang

Zhang

Wang

et al. 2023

Foods

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Insoluble dietary fiber is a macromolecular polysaccharide aggregate composed of pectin, glycoproteins, lignin, cellulose, and hemicellulose. All agricultural by-products contain significant levels of insoluble dietary fiber. With the recognition of the increasing scarcity of non-renewable energy sources, the conversion of single components of dietary fiber into renewable energy sources and their use has become an ongoing concern. The isolation and extraction of single fractions from insoluble dietary fiber is one of the most important recent research directions. The continuous development of technologies for the separation and extraction of single components is aimed at expanding the use of cellulose, hemicellulose, and lignin for food, industrial, cosmetic, biomedical, and other applications. Here, to expand the use of single components to meet the new needs of future development, separation and extraction methods for single components are summarized, in addition to the prospects of new raw materials in the future.

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Insights into structure and properties of cellulose nanofibrils (CNFs) prepared by screw extrusion and deep eutectic solvent permeation

Cited by 33 publications

References 56 publications

Insights into the critical role of anions in nanofibrillation of cellulose in deep eutectic solvents

Insights into the critical role of anions in nanofibrillation of cellulose in deep eutectic solvents

Deep eutectic solvents towards green polymeric materials

Isolation and Extraction of Monomers from Insoluble Dietary Fiber

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